Is that how you did the experiment Mriana?
Well, yes, but that would mean that moon would not be spinning on it’s axis or moving at all, so it really isn’t a very real similation.
Yes, we almost hashed out the missing link.
The difference between the pumpkin on the merry-go-round and the earth & moon is that the merry-go-round is a single solid force. The moon orbiting the earth is affected by two forces, revolution & spin. We know it is two forces because the spin of the earth & the moon are independent of their revolutions. For example the earth is spinning multiple times for every one spin of the moon.
The way to represent this on the merry-go-round experiment is that both you (earth) and the pumpkin (moon) will be on mini merry-go-rounds that function like a compass (always point in one direction) on top of the main merry-go-round. If the pumpkin had no spin it would always face north and you would see all sides (once every revolution).
The tricky part is the massive coincidence that the moon is spinning at the exact same time that it revolves around us. If you increased the moons spin to spin twice in one revolution, we (on earth) would only observe one spin. It is tricky to visualize, but the main distinction is the two separate forces involved, revolution (orbit) & spin (rotation). The main merry-go-round accounts for the revolution and the separate mini “merry-go-round compasses” account for the spins.
Does that distinction make sense?
Edit: I like the example Fotobits made while I was writing this. The shuffeling of feet is a good indicator that spin (rotation) is happening at the same time as revolution (orbit).